METHOD FOR PRODUCTION OF POTASSIUM HUMATE FROM LOCAL PEATS OF YAMALO-NENETS AUTONOMOUS OKRUG

摘要

FIELD: agriculture.;SUBSTANCE: invention relates to the field of ecology and soil science. The method for producing potassium humate from local peats of Yamalo-Nenets Autonomous Okrug for reclamation of disturbed and contaminated tundra soils includes: at the first stage - the 0.1 N peat decalcification with sulfuric acid solution at the ratio of 1:20 and its sedimentation; at the second stage - the extraction of humic acids from the resulting sediment 0.1N with sodium hydroxide at the ratio of 1:15, at the third stage - the sedimentation of humic acids with 10% hydrochloric acid solution at the ratio of 50:1, at the fourth stage - the purification of the obtained humic acids sediment by dissolving it in 0.1 N sodium hydroxide solution, adding sodium sulfate solution and 0.1 n hydrochloric acid solution, rinsing with distilled water and drying. At the fifth stage, implemented once, the analysis of the aliphatic, polysaccharide, and aromatic carboxyl carbon content in humic acids is performed by means of the nuclear magnetic resonance spectroscopy ¹³C-method, by which the regional specificity of a particular peat field is determined, and, using the data obtained, the 2.5% potassium humate solution with pH 7 is subsequently prepared by adding distilled water and 0.1N. solution of potassium hydroxide, and based on express laboratory studies the recommendations are given for its optimal implementation, in particular together with peat for the reclamation of specific plots of disturbed tundra land near the area of peat deposits.;EFFECT: invention provides obtaining chemically pure humic acids, achieving the maximum compliance with environment in the reclamation of disturbed tundra soils.;1 tbl